Jessica Lowndes shows off her pearly whites as she arrives for the Teen Vogue Young Hollywood Party on Thursday night (September 27) in Beverly Hills, Calif.

This weekend, you’ll be able to watch the 23-year-old actress in Lifetime’s A Mother’s Nightmare.

Co-star Grant Gustin dished to AfterElton.com about working with Jess.

“She was so much fun to work with. She’s a great actress and a lot of fun to play off of,” Grant shared. “She did a great job because her character, Vanessa, could’ve gone in a way that wasn’t realistic, but she was more human. You see why she’s messed up and doing the things she was doing. I think there was a danger of not having that aspect, but Jessica brought that to the character.”